1. Thyssenkrupp Bilstein GmbH; Niederkell 25 54429 Mandern Germany
2. Max-Planck-Institut für Eisenforschung GmbH; Max-Planck-Str. 1 40237 Düsseldorf Germany
3. Applied Physical Chemistry; Heidelberg University; Im Neuenheimer Feld 253 69120 Heidelberg Germany
4. Department of Chemistry; University College in Al-Qunfudah, Umm Al-Qura University; 1109 Makkah Al-Mukarramah Saudi Arabia
5. Department of Chemistry; Tafila Technical University; P.O. Box 179 Tafila 66110 Jordan